func (e *Element) At(x, y int) color.Color {
offset := gfx.GetPixelOffset(x, y, e.Width)
return color.RGBA{
R: e.Buffer[offset+I_R],
G: e.Buffer[offset+I_G],
B: e.Buffer[offset+I_B],
A: e.Buffer[offset+I_A],
}
}
func (fb *Framebuffer) At(x, y int) color.Color {
offset := gfx.GetPixelOffset(x, y, int(fb.Vinfo.Xres))
return color.RGBA{
R: fb.MemOffscreen[offset+I_R],
G: fb.MemOffscreen[offset+I_G],
B: fb.MemOffscreen[offset+I_B],
A: fb.MemOffscreen[offset+I_A],
}
}
func (e *Element) Set(x, y int, c color.Color) {
offset := gfx.GetPixelOffset(x, y, e.Width)
r, g, b, a := c.RGBA()
// since image.Draw works with RGBA64 internally we need to convert the color value to RGBA before writing
// to the framebuffer - hence the div 256
e.Buffer[offset+I_R] = uint8(r / 256)
e.Buffer[offset+I_G] = uint8(g / 256)
e.Buffer[offset+I_B] = uint8(b / 256)
e.Buffer[offset+I_A] = uint8(a / 256)
}
func (fb *Framebuffer) Set(x, y int, c color.Color) {
offset := gfx.GetPixelOffset(x, y, int(fb.Vinfo.Xres))
r, g, b, a := c.RGBA()
// since image.Draw works with RGBA64 internally we need to convert the color value to RGBA before writing
// to the framebuffer - hence the div 256
fb.MemOffscreen[offset+I_R] = uint8(r / 256)
fb.MemOffscreen[offset+I_G] = uint8(g / 256)
fb.MemOffscreen[offset+I_B] = uint8(b / 256)
fb.MemOffscreen[offset+I_A] = uint8(a / 256)
}
